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LPIC-1 Devices, Filesystems and FHS Practice Question

A technician runs 'blkid' and sees output like '/dev/sda2: UUID="abc-def-ghi" TYPE="ext4"'. Which command can mount this partition using its UUID?

⚠ Common exam trap

A common mix-up: candidates confuse the '-U' (UUID) option with the '-L' (label) option, or assume that any option that accepts a string can mount by UUID, leading them to select the incorrect '-L' or '-I' flags.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

mount -U "abc-def-ghi" /mnt

The 'mount' command supports the '-U' option to specify a partition by its UUID, which is a unique identifier for the filesystem. This allows mounting without relying on device names like /dev/sda2, which can change across reboots. The UUID is taken directly from the 'blkid' output.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✓

    mount -U "abc-def-ghi" /mnt

    Why this is correct

    mount -U mounts by UUID.

  • ✗

    mount -I "abc-def-ghi" /mnt

    Why it's wrong here

    -I is not a valid mount option.

  • ✗

    mount /dev/sda2 /mnt

    Why it's wrong here

    This mounts by device name, which may change.

  • ✗

    mount -L "abc-def-ghi" /mnt

    Why it's wrong here

    -L is for label, not UUID.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This LPIC-1 practice question is part of Courseiva's free LPI certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the LPIC-1 exam.